/Engine/Source/Runtime/Engine/Classes/Materials/MaterialInterface.h
class UMaterialInterfaceEditorOnlyData : public [UObject](API\Runtime\CoreUObject\UObject\UObject)
bool
bLoadedCachedExpressionData
Set if CachedExpressionData was loaded from disk, should typically be true when running with cooked data, and false in the editor
TSharedPtr<FMa...
CachedExpressionData